WO2019049348A1 - User device and capability information notification method - Google Patents

Abstract

This user device in a wireless communication system is equipped with a settings information management unit for storing mapping information which expresses the mapping of resources and capability information in a sidelink; and a signal transmission unit for providing notification of the user device capability information by transmitting a notification signal by using a resource which corresponds to the capability information of the user device in the sidelink, on the basis of the mapping information.

Description

User device and capability information notification method

The present invention relates to a user equipment in a wireless communication system.

In LTE (Long Term Evolution) and LTE successor systems (for example, LTE-A (LTE Advanced), NR (New Radio) (also referred to as 5G)), D2D in which user apparatuses directly communicate with each other without going through a base station (Device to Device) technology is being considered.

D2D reduces traffic between a user apparatus and a base station, and enables communication between user apparatuses even when the base station becomes incapable of communication in a disaster or the like.

D2D is D2D discovery (also referred to as D2D discovery, also referred to as D2D discovery) for finding another user apparatus that can communicate, and D2D communication for direct communication between user apparatuses (D2D direct communication, D2D communication, direct communication between terminals) It is divided roughly into () and so on. In the following, D2D communication, D2D discovery and the like are simply referred to as D2D when not distinguished from each other. Further, a signal transmitted / received by D2D is called a D2D signal. Also, D2D may be referred to as sidelink.

Further, in 3GPP, it is studied to realize V2X (Vehicle to Everything) by extending the above-mentioned D2D function, and specification is advanced. Here, V2X is a part of ITS (Intelligent Transport Systems), and as shown in FIG. 1, V2V (Vehicle to Vehicle), which means a form of communication performed between vehicles, is installed at the side of vehicles and roads. V2I (Vehicle to Infrastructure), which means the form of communication performed with the Road-Side Unit (RSU), V2N (Vehicle to Infrastructure, means the form of communication performed between the car and the mobile terminal of the driver. It is a generic name of V2P (Vehicle to Pedestrian) which means a form of communication performed between a Nomadic device and a mobile terminal between a car and a pedestrian.

In Rel-14 of LTE, specifications regarding some functions of V2X are made (eg, Non-Patent Document 1). In the specifications, Mode 3 and Mode 4 are defined for resource allocation for V2X communication to the user apparatus. In Mode 3, transmission resources are dynamically allocated by DCI (Downlink Control Information) sent from the base station to the user apparatus. In Mode 3, SPS (Semi Persistent Scheduling) is also possible. In Mode 4, the user apparatus autonomously selects transmission resources from the resource pool.

3GPP TS 36.213 V14.2.0 (2017-03)

In communication between the base station and the user apparatus, the user apparatus transmits capability information (hereinafter referred to as UE capability) to the base station, and the base station uses, for example, the user apparatus in a communication scheme according to the UE capability of the user apparatus. Communicate with

However, in the side link communication including V2X, notification of UE capability between user apparatuses is not defined. Therefore, for example, a user apparatus with high ability to transmit a signal by a new communication scheme can not detect whether there is a user apparatus not having reception ability corresponding to the high ability in the vicinity, There is a problem that it is difficult to determine whether to transmit a signal by the new communication method.

The present invention has been made in view of the above, and a user apparatus supporting sidelink communication transmits sidelink capability information to another user apparatus or other sidelink capability information. An object of the present invention is to provide a technology that enables reception from a user device.

According to the disclosed technology, a user equipment in a wireless communication system,
A setting information management unit that holds mapping information indicating mapping of capability information and resources in the side link;
Providing a signal transmission unit for notifying of the capability information of the user apparatus by transmitting a notification signal using a resource corresponding to the capability information of the user apparatus in the side link based on the mapping information. A characterized user device is provided.

According to the disclosed technology, it is possible for a user device supporting sidelink communication to transmit sidelink capability information to another user device or to receive sidelink capability information from another user device. Technology will be provided.

It is a figure for demonstrating V2X. It is a figure for demonstrating D2D. It is a figure for demonstrating D2D. It is a figure for demonstrating MAC PDU used for D2D communication. It is a figure for demonstrating the format of SL-SCH subheader. It is a figure for demonstrating the example of the channel structure used by D2D. It is a figure which shows the structural example of PSDCH. It is a figure which shows the structural example of PSDCH. It is a figure which shows the structural example of PSCCH and PSSCH. It is a figure which shows the structural example of PSCCH and PSSCH. It is a figure which shows the structural example of the radio | wireless communications system which concerns on embodiment. It is a figure for demonstrating a basic operation example. It is a figure which shows the example of UE capability set. It is a figure which shows the example of UE capability set. It is a figure which shows the example of mapping of UE capability. It is a figure which shows the example of mapping of UE capability. It is a figure which shows the example which transmits UE capability using a synchronous signal. It is a figure which shows the example which transmits UE capability using a synchronous signal. It is a figure which shows the example which transmits UE capability using DM-RS. It is a figure which shows the example which transmits UE capability using PSBCH. It is a figure which shows the example which transmits UE capability using SLSS / PSBCH. It is a figure which shows the example which transmits UE capability using SLSS / PSBCH. It is a figure which shows the example which transmits UE capability using SL group discovery signal. It is a figure for demonstrating the multiplexing method of SL group discovery signal and other SL channel / signal. It is a figure for demonstrating the multiplexing method of SL group discovery signal and other SL channel / signal. It is a figure for demonstrating the multiplexing method of SL group discovery signal and other SL channel / signal. It is a figure for demonstrating propagation of UE capability. It is a figure for demonstrating propagation of UE capability. It is a figure for demonstrating the example of network assistance. It is a figure which shows an example of a function structure of the user apparatus UE which concerns on embodiment. It is a figure which shows an example of a function structure of base station 10 which concerns on embodiment. It is a figure which shows an example of the hardware constitutions of the base station 10 which concerns on embodiment, and the user apparatus UE.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the embodiments described below are merely examples, and the embodiments to which the present invention is applied are not limited to the following embodiments.

The wireless communication system according to the present embodiment is assumed to support at least the existing LTE communication scheme. Therefore, when the wireless communication system operates, the existing technology defined by the existing LTE can be used as appropriate. However, the existing technology is not limited to LTE. Also, “LTE” used in this specification has a broad meaning including LTE-Advanced and LTE-Advanced and later, unless otherwise specified.

In the embodiments described below, terms such as channel names and signal names used in existing LTE are used, but this is for the convenience of description, and channels, signals and the like similar to these. May be called by other names.

In addition, although the present embodiment assumes that V2X is mainly targeted, the technology according to the present embodiment is not limited to V2X, and can be widely applied to D2D in general.

(Overview of D2D)
In the present embodiment, since D2D is a basic technology, the user equipment in the present embodiment, which first describes the outline of D2D defined in LTE, can transmit and receive D2D signals according to the technology. .

As described above, D2D is broadly divided into "D2D discovery" and "D2D communication". For “D2D discovery”, as shown in FIG. 2A, a resource pool for a Discovery message is secured for each Discovery period, and the user apparatus transmits a Discovery message (discovery signal) in the resource pool. There are Type 1 and Type 2b in more detail. In Type 1, the user apparatus UE autonomously selects a transmission resource from the resource pool. In Type 2b, semi-static resources are allocated by higher layer signaling (for example, RRC signaling).

Also in “D2D communication”, as shown in FIG. 2B, resource pools for SCI (Sidelink Control Information) / data transmission are periodically secured. The user apparatus on the transmission side notifies the reception side of a data transmission resource (PSSCH resource pool) or the like by the SCI using a resource selected from the Control resource pool (PSCCH resource pool), and transmits data using the data transmission resource. There are Mode 1 and Mode 2 in more detail about "D2D communication". In Mode 1, resources are dynamically allocated by (E) PDCCH sent from the base station to the user apparatus. In Mode 2, the user apparatus autonomously selects transmission resources from the resource pool. For resource pools, those notified by SIB or those defined in advance are used.

In addition to Mode 1 and Mode 2, Rel-14 has Mode 3 and Mode 4. In Rel-14, it is possible to transmit SCI and data simultaneously (in one subframe) in resource blocks adjacent in the frequency direction.

In LTE, a channel used for "D2D discovery" is called PSDCH (Physical Sidelink Discovery Channel), and a channel for transmitting control information such as SCI in "D2D communication" is called PSCCH (Physical Sidelink Control Channel), and data The channel that transmits the channel is called PSSCH (Physical Sidelink Shared Channel).

As shown in FIG. 3, a MAC (Medium Access Control) PDU (Protocol Data Unit) used for D2D includes at least a MAC header, a MAC control element, a MAC SDU (Service Data Unit), and Padding. The MAC PDU may contain other information. The MAC header is configured of one SL-SCH (Sidelink Shared Channel) subheader and one or more MAC PDU subheaders.

As shown in FIG. 4, the SL-SCH subheader is composed of a MAC PDU format version (V), transmission source information (SRC), transmission destination information (DST), reserved bit (R) and the like. V is assigned to the beginning of the SL-SCH subheader and indicates a MAC PDU format version used by the user apparatus. Information on the transmission source is set in the transmission source information. An identifier related to ProSe UE ID may be set in the transmission source information. Information on the transmission destination is set in the transmission destination information. In the destination information, information on the ProSe Layer-2 Group ID of the destination may be set.

An example of a D2D channel structure is shown in FIG. As shown in FIG. 5, PSCCH resource pools and PSSCH resource pools used for “D2D communication” are allocated. In addition, PSDCH resource pools used for "D2D discovery" are allocated in a cycle longer than the channel cycle of "D2D communication".

Moreover, PSSS (Primary Sidelink Synchronization signal) and SSSS (Secondary Sidelink Synchronization signal) are used as synchronization signals for D2D. Also, for example, a PSBCH (Physical Sidelink Broadcast Channel) that transmits broadcast information such as a D2D system band, a frame number, and resource configuration information for out-of-coverage operation is used. PSSS / SSSS and PSBCH are transmitted in one subframe. In the following description, PSSS / SSSS is described as SLSS. In addition, SLSS which does not include PSBCH may be transmitted in one certain subframe.

FIG. 6A shows an example of a PSDCH resource pool used for “D2D discovery”. The resource pool is configured with a bitmap of subframes, so it becomes an image resource pool as shown in FIG. 6A. The same applies to resource pools of other channels. In addition, PSDCH is repeatedly transmitted (repetition) while frequency hopping. The number of repetitions can be set, for example, from 0 to 4. Also, as shown in FIG. 6B, PSDCH has a PUSCH-based structure, in which a DM-RS (demodulation reference signal) is inserted.

FIG. 7A shows an example of PSCCH and PSSCH resource pools used for “D2D communication”. In the example shown in FIG. 7A, PSCCH is repeatedly transmitted twice (repetition) including the first time while frequency hopping is performed. The PSSCH is repeatedly transmitted (repetition) four times including the first time while frequency hopping. Further, as shown in FIG. 7B, PSCCH and PSSCH have a PUSCH-based structure, and a structure in which DMRS is inserted.

(System configuration)
FIG. 8 is a diagram showing an example of configuration of a wireless communication system according to the present embodiment. As shown in FIG. 8, the wireless communication system according to the present embodiment includes a base station 10, a user apparatus UE1, and a user apparatus UE2. In FIG. 8, the user apparatus UE1 intends to be a transmitting side, and the user apparatus UE2 is intended to be a receiving side, but both the user apparatus UE1 and the user apparatus UE2 have both a transmitting function and a receiving function. Hereinafter, the user apparatus UE1 and the user apparatus UE2 will be simply described as "the user apparatus UE" when not particularly distinguished. Moreover, although FIG. 8 illustrates the case where both the user apparatus UE1 and the user apparatus UE2 are in the coverage as an example, the operation of the present embodiment is both when the both user apparatuses UE are in the coverage and both The present invention can be applied to both the case where the user apparatus UE of is out of coverage and the case where one user apparatus UE is within coverage and the other user apparatus UE is outside coverage.

The user apparatuses UE shown in FIG. 8 each have a function of cellular communication as the user apparatus UE in LTE or NR, and a D2D function including signal transmission / reception on the above-mentioned channel. Also, the user apparatus UE has a function of executing the operation described in the present embodiment.

Also, the user apparatus UE may be any apparatus having the D2D function, but for example, the user apparatus UE may be a vehicle, a terminal held by a pedestrian, an RSU (UE type RSU having the UE function, etc.), etc. is there.

Further, for base station 10, the function of cellular communication as base station 10 in LTE or NR, and the function for enabling communication of user apparatus UE in the present embodiment (mapping information setting to user apparatus UE) , Restriction information setting etc.). Further, the base station 10 may be an RSU (eNB type RSUs having an eNB function).

Further, in the radio communication system according to the present embodiment, the signal waveform used by the user apparatus UE for the side link may be OFDMA, SC-FDMA, or any other signal waveform. May be Further, in the radio communication system according to the present embodiment, as in the existing LTE, a frame consisting of a plurality of subframes (eg, 10 subframes) is formed in the time direction, and a plurality of frequency directions are provided. Consists of sub-carriers of However, this is an example, and a time unit (eg, slot) other than a subframe may be used as a TTI.

(Basic operation example)
In the present embodiment, the user apparatus UE transmits UE capability (capability information of the user apparatus UE) in a UE specific manner or a group common manner.

For example, as shown in FIG. 9, the user apparatus UE1 transmits UE capability, and the user apparatus UE2 receives the UE capability (S101). The user apparatus UE2 can transmit a signal, for example, in a scheme corresponding to the capability less than the capability determined from the UE capability of the user apparatus UE1 on the transmitting side (S102). For example, when the user apparatus UE2 has a transmission diversity function but the receiving side does not have a function of receiving a signal for transmission diversity, the user apparatus UE2 can perform transmission without using the transmission diversity function.

Although FIG. 9 shows that the user apparatus UE2 receives UE capabilituy from one user apparatus UE1, the user apparatus UE2 may receive UE capabilities from a plurality of neighboring user apparatuses UE. In that case, for example, when the user apparatus UE2 detects that all the user apparatuses UE in the neighborhood have the same or higher capability than that of the user apparatus UE2 (user apparatus UE2), the user apparatus UE2 determines its own capability. Signaling can be performed by multicast or group cast in a corresponding manner.

Here, UE capability of the side link in the present embodiment will be described. The user apparatus UE supports any UE capability below the highest capability UE capability to support. In addition, the user apparatus UE may select and notify UE capability lower than UE capability of the highest capability to support. For example, a user equipment UE having a capability (or a preset capability) notified or configured by a base station or another user equipment reports UE capability of capability lower than the highest capability UE capability to support. .

When the user apparatus UE determines transmission parameters, the transmission parameters may be determined based on UE capabilities used for notification.

UE capability may be information including one or more functions supported by the user apparatus UE, or may be an ID (identification information, index) indicating a set of functions. Moreover, UE capability set may be defined as information including each function which the user apparatus UE supports.

The UE capability set is, for example, a set of functions (fatures) supported by the user apparatus UE. The functions include, for example, the number of transmission / reception MIMO layers, transmission bit rate, diversity transmission / reception, band combination of CA, and the like.

The UE capability set is notified by an ID (which may be an index). For example, as shown in FIG. 10A, a table in which UE capability set ID is associated with supported functions is (pre-set) set, and the user equipment UE sets UE capability set ID corresponding to its own capability as UE capability. Send. In the example of FIG. 10A, for example, a user apparatus UE having feature-A, feature-B, and feature-C transmits “1” as a UE capability set ID.

Also, the function may be expressed as a bitmap, and the user apparatus UE may transmit a UE capability set ID corresponding to its own bitmap based on the mapping shown in FIG. 10B. For example, assuming that there are eight functions (A, B, C, D, E, F, G, H), it is assumed that bitmaps are defined in order from the left of this function. In this case, for example, the bitmap corresponding to UE capability set ID = 2 in FIG. 10B is represented as “000101000”. The bitmap and the mapping information may be (pre-) configured in the user apparatus UE.

The overhead can be reduced by notifying UE capability using the set as described above.

In the following description, "UE capability" may be replaced with "UE capability set", or "UE capability set" may be replaced with "UE capability".

Hereinafter, the group common scheme will be described as the first embodiment, and the UE individual scheme will be described as the second embodiment. As described below, Example 1-1 includes Example 1-1, Example 1-2, and Example 1-3, and Example 2 includes Example 2-1, Example 2-2. , Example 2-3.

(Example 1: common group method)
First, the first embodiment will be described. In the first embodiment, the user apparatus UE transmits UE capability with common information among a plurality of user apparatuses (groups of user apparatuses). For example, user apparatuses UE belonging to a group of user apparatuses UE of UE capability = # 1 perform notification by the same resource and cyclic shift in the group.

In the first embodiment, the user apparatus UE on the receiving side that receives the UE capability can not identify the transmission source of the UE capability, but can detect that there is a user apparatus UE having the UE capability in the neighborhood.

Specifically, the following Examples 1-1, 1-2, and 1-3 are given.

In Example 1-1, the user apparatus UE transmits UE capability in the signal (sequence, payload) transmitted along with PSBCH in the same subframe as SLSS and / or SLSS.

In Example 1-2, UE capability is transmitted on the sidelink broadcast channel, that is, PSBCH.

In the embodiment 1-3, the UE capability is transmitted by using a new signal, ie, an SL group discovery signal (sidelink group discovery signal). Each of these will be described below.

Example 1-1
In Example 1-1, the sequence of SLSS and / or transmission resources of SLSS are mapped to UE capability. Since the sequence of SLSS is associated with the SLSS ID, that the sequence of SLSS is associated with the UE capability may be rephrased as the SLSS ID is associated with the UE capability. For example, the user apparatus UE transmits the SLSS of the SLSS ID corresponding to the notifying UE capability. Note that "sequence" may be considered as a type of transmission resource.

Also, DM-RS (reference signal for demodulation) transmitted together with PSBCH or DM-RS transmitted together with another channel (PSCCH, PSSCH) may be mapped to UE capability. In this case, for example, DM-RS sequences and / or cyclic shifts and / or ports are mapped to UE capabilities. Note that "cyclic shift" and "port" may be considered as a type of transmission resource.

Any of the above mappings may be predefined, or may be configured by RRC signaling from the base station 10 to the user apparatus UE, or may be preset in the user apparatus UE. may be configured. In addition, being "predefined" may be considered as synonymous with being fixedly set to the user apparatus UE, and may be understood as a kind of presetting.

Hereinafter, the setting as described above will be described as “(pre-set) setting”.

Note that the mapping information for UE capability transmission described in the present embodiment may be used as information for reception (monitoring) of UE capability in the user apparatus UE, or reception of UE capability (monitoring (monitoring) The mapping information for) may be (pre) configured in the user apparatus separately from the mapping information for transmission.

FIG. 11 shows an example of mapping of SLSS ID and UE capability. The mapping of synchronization types is also shown in FIG. 11 because the SLSS ID can identify synchronization types such as in-coverage / outside. According to this mapping, for example, the user apparatus UE whose synchronization type is Type A and the notifying UE capability is Type X transmits an SLSS of SLSS ID = 1.

FIG. 12 shows an example of mapping between reference signals (eg, DM-RS) and UE capabilities. According to this mapping, for example, the user apparatus UE whose UE capability to notify is Type X transmits DM-RS with cyclic shift of 0.

With respect to a scheme for mapping a sequence of SLSS to UE capability, “PSSS and SSSS” configuring SLSS may be mapped to UE capability, only PSSS may be mapped to UE capability, or only SSSS is UE capability May be mapped to

FIG. 13 shows an example where only PSSS is mapped to UE capability. FIG. 13 illustrates an example in which the user apparatus UE transmits PSSS (Primary sequence in the figure), SSSS (Secondary sequence in the figure), and PSBCH (Broadcast channel in the figure) in a certain subframe. There is. As shown in FIG. 13, a sequence of PSSS is associated with UE capability notified by the user apparatus UE. The sequence of PSSS may be preset corresponding to UE capability of the user apparatus UE, and the user apparatus UE may select the PSSS sequence according to it, or the user apparatus UE may select the PSSS sequence and the UE capability. The sequence of PSSS may be selected according to the mapping.

In addition, as shown in FIG. 13, the information carried by PSBCH is common among UEs in a cell, for example. This point is the same as in FIG. 14 and FIG.

FIG. 14 shows an example where only SSSS is mapped to UE capability. As shown in FIG. 14, a sequence of SSSS is associated with UE capability of the user apparatus UE. The sequence of SSSS may be preset corresponding to UE capability of the user apparatus UE, and the user apparatus UE may select the SSSS sequence according to it, or the user apparatus UE may select SSSS sequence and UE capability. A sequence of SSSS may be selected according to the mapping.

FIG. 15 shows an example of transmitting UE capability using DM-RS transmitted with PSBCH. As shown in FIG. 15, the DM-RS sequence, transmission resource (time resource and / or frequency resource), or port number is associated with UE capability of the user apparatus UE. The DM-RS sequence, transmission resource, or port number is preset corresponding to the UE capability of the user apparatus UE, and the user apparatus UE selects the DM-RS sequence, transmission resource, or port number according to it. The user equipment UE may transmit the DM-RS according to the DM-RS sequence, the transmission resource (time resource and / or frequency resource), or the mapping of the port number to the UE capability. And / or frequency resources) or port numbers may be selected.

FIG. 16 illustrates an example of transmitting UE capability using a part of PSBCH resources (eg, one or more symbols of multiple symbols for transmitting PSBCH). UE capability may be mapped to the said resource, and the information (content) transmitted by the said resource may be information (example: ID) which shows UE capability.

FIG. 17 illustrates an example in which SLSS transmission resources are mapped to UE capabilities. More specifically, in the example of FIG. 17, SLSS transmission subframes are mapped to UE capabilities.

Basically, the SLSS is transmitted in a predetermined cycle in subframes based on subframe offsets. In the example of FIG. 17, the mapping information of the transmission subframe number of SLSS (for example, the number designated as a subframe offset) and the UE capability is (pre-set) set in the user apparatus UE, and the user apparatus UE , And transmits the SLSS in a subframe corresponding to the UE capability to notify.

More specifically, in FIG. 17, since the user equipment UE notifies the UE capability ID = # 1, the user equipment UE periodically transmits the SLSS in the subframe corresponding to the ID = # 1. In addition, in the example of FIG. 17, although PSBCH is transmitted with SLSS, you may transmit only SLSS, without transmitting PSBCH.

Further, as shown by A and B in FIG. 17, there are two subframes corresponding to ID = # 1. As to which of A and B to select, the notification of the subframe offset from the base station 10 may be made or selection may be made based on the synchronization source (eg, base station source, GNSS source).

Also, SLSS transmission subframes may be preset based on UE capability for the user apparatus UE, and the user apparatus UE transmits SLSS according to the mapping information of SLSS transmission subframe number and UE capability. Sub-frames may be selected.

Note that FIG. 17 illustrates an example in which SLSS time resources are mapped to UE capabilities, but this is an example, and SLSS frequency resources may be mapped to UE capabilities.

In the user apparatus UE on the receiving side that receives the SLSS shown in FIG. 17, for example, the same mapping information as the mapping information set in advance on the user apparatus UE on the transmitting side is set in advance, and the receiving side The user equipment UE can detect the UE capability of the transmitting user equipment UE that transmits the SLSS based on the received SLSS subframe number and the mapping information. For example, the user apparatus UE that has received the SLSS in the subframe illustrated in A of FIG. 17 can detect that there is a user apparatus UE of UE capability set = # 1 in the vicinity.

Example 1-2
In Example 1-2, the transmission resource of PSBCH is mapped to UE capability. A specific example will be described with reference to FIG.

In the example of FIG. 18, the user apparatus UE periodically transmits an SLSS in a subframe selected based on, for example, a subframe offset (or synchronization source) notified from the base station 10.

Furthermore, here, mapping information between the transmission subframe number of PSBCH (for example, designated as subframe offset) and UE capability is (previously) set in the user apparatus UE, and the user apparatus UE is based on the mapping information. Then, the PSBCH is transmitted together with the SLSS in a subframe corresponding to the UE capability to be notified.

More specifically, in FIG. 18, the user apparatus UE transmits SLSS and PSBCH in a subframe corresponding to ID = # 1, since the ID of its own UE capability set = # 1.

A PSBCH transmission subframe may be preset based on UE capability for the user apparatus UE, or the user apparatus UE may transmit PSBCH transmission subframe according to mapping information of PSBCH transmission subframe number and UE capability. May be selected.

Although FIG. 18 illustrates an example in which PSBCH time resources are mapped to UE capabilities, this is an example, and PSBCH frequency resources may be mapped to UE capabilities.

Example 1-3
Next, Example 1-3 will be described. As described above, in the example 1-3, the user apparatus UE transmits UE capability using an SL group discovery signal (sidelink group discovery signal).

It is assumed that the SL group discovery signal is a signal of a physical layer which does not transmit information from the upper layer, like the reference signal or the synchronization signal. However, the present invention is not limited to this, and the SL group discovery signal may be a signal transmitted on a channel for transmitting information from the upper layer.

For example, for transmission, a sequence of SL group discovery signals and / or resources of SL group discovery signals are mapped to UE capabilities. Moreover, the information of the said mapping is (previously set) in the user apparatus UE. Then, for example, the user apparatus UE transmits an SL group discovery signal using a sequence and / or resources corresponding to the notified UE capability based on the information of the mapping. Also, for transmission of the SL group discovery signal to the user apparatus UE, a sequence of SL group discovery signal corresponding to UE capability of the user apparatus UE and / or resources of the SL group discovery signal are (pre-set) configured. The user apparatus UE may transmit an SL group discovery signal in accordance with the (preliminary) setting.

Also, for reception (monitoring), a sequence of SL group discovery signal and / or a resource of SL group discovery signal may be mapped to UE capability. Also in this case, the information on the mapping is (previously) set in the user apparatus UE. For example, the user apparatus UE monitors sequences and / or resources, receives an SL group discovery signal, and detects UE capability based on the information of the mapping. The transmission mapping information may also serve as the reception mapping information.

FIG. 19 shows an example of transmission of an SL group discovery signal. FIG. 19 is an example in the case where transmission time resources (subframes) of SL group discovery signal are mapped to UE capability, and as illustrated, in the frequency domain, SL group discovery signal is generated at both ends of the system band. Will be sent.

For example, in the example of FIG. 19, in the frequency domain where the SL group discovery signal is not transmitted, the user apparatus UE can transmit side link signals other than the SL group discovery signal.

However, if the SL group discovery signal and side link signals other than the SL group discovery signal (eg, PSCCH, PSSCH, PSDCH) can not be transmitted simultaneously (that is, in the same subframe) due to the limitation of the transmission capability of the user apparatus UE, For example, the user apparatus UE may drop (do not transmit) transmission of the SL group discovery signal in the subframe, and may transmit a side link signal other than the SL group discovery signal.

Also, as described above, when simultaneous transmission of the SL group discovery signal and the side link signal other than the SL group discovery signal occurs and the SL group discovery signal is dropped, the user apparatus UE notifies of the UE capability. May be performed using the side link signal (eg, PSCCH, PSSCH, PSDCH) which is not dropped. As a notification method in this case, for example, DM-RS transmitted together with the side link signal may be used. When using DM-RS, as described above, based on the mapping of UE capability and sequence or cyclic shift, DM-RS is transmitted using sequence or cyclic shift corresponding to UE capability to communicate. .

As illustrated in FIG. 19, the user apparatus UE can transmit an SL group discovery signal using frequency resources in the frequency domain of an end portion (one end or both ends) of a system band. . Thus, by utilizing frequency resources at the end of the system band, resource fragmentation can be avoided when transmitting sidelink signals other than SL group discovery signals, and single carrier signals such as SC-FDMA can be used. This is particularly effective when using a waveform.

Next, with respect to variations of the multiplexing method in the case where the SL group discovery signal and the side link signals other than the SL group discovery signal can be simultaneously transmitted, Embodiment 1-3-1, Embodiment 1-3-2, Embodiments It will be described as 1-3-3 and Example 1-3-4. In the following description of the embodiment 1-3, the side link signal other than the SL group discovery signal is simply described as a side link signal.

In Example 1-3-1, the resource (which may be a resource pool) for transmitting the side link signal is (previously set) in the user apparatus UE, and the side link signal and the SL group discovery signal are frequency divided. Multiplexed (FDM).

FIG. 20 shows an example of transmission of the SL group discovery signal and the side link signal (described as Other SL channel / signal in FIG. 20) in Example 1-3-1. In the example shown in FIG. 20, while the SL group discovery signal is transmitted on the frequency resource at both ends of the system band, the side link signal is provided in the part of the system band inside the frequency resource to which the SL group discovery signal is transmitted. Resource pools are set up (in advance), and side link signals are transmitted on resources in the resource pools.

In Example 1-3-2, although the resource of the entire system band can basically be used for transmission of the side link signal, blanks for transmission of the SL group discovery signal among the resources (example: puncture) , (Rate matching) resources are set (in advance). The user apparatus UE transmits a side link signal using resources other than blank resources, and transmits an SL group discovery signal using blank resources.

FIG. 21 shows a transmission example of the SL group discovery signal in the embodiment 1-3-2 and the side link signal (described as Other SL channel / signal in FIG. 21). As shown in FIG. 21, among resources capable of transmitting side link signals, SL group discovery signals are transmitted using blank resources set at both ends of the system band.

In Example 1-3-3, for example, as shown in FIG. 19, the transmission resource of the SL group discovery signal is set (in advance). In addition, the side link signal can be transmitted on resources other than the resource. However, if some or all of the resources (eg, subchannels) for transmitting the sidelink signal (eg, PSCCH, PSSCH) overlap with the transmission resource of the SL group discovery signal in a certain slot (or certain subframe) In some cases, the user apparatus UE does not use a resource (subchannel) overlapping with the transmission resource of the SL group discovery signal for transmission of the sidelink signal (disabled).

FIG. 21 is also a diagram showing Example 1-3-3. In FIG. 21, for example, a resource for SL group discovery signal indicated by A is selected by the user apparatus UE as a subchannel for transmission of a side link signal at a time before the time when the resource appears. However, the resource is not used for transmitting the side link signal but for transmitting the SL group discovery signal.

Example 1-3-4 is a detailed example for Examples 1-3-1 to 1-3-3. In Example 1-3-4, the user apparatus UE excludes resources for SL group discovery signal from candidate resources for resource selection for side link signal transmission.

FIG. 22 is a diagram showing in more detail an example of transmission of an SL group discovery signal and a side link signal (here, Data) in the embodiment 1-3-2 and the like. As indicated by A in FIG. 22, control information indicating a resource of Data is transmitted on PSCCH. The granularity of the information of the resource notified by the control information may not be the fine granularity corresponding to the transmission resource of the SL group discovery signal, and as shown by B in FIG. 22, the granularity may include the transmission resource of the SL group discovery signal (Example: Particle size of existing technology). Then, the user apparatus UE that transmits Data and the SL group discovery signal in the same slot indicated by C, the resource amount of Data by rate matching or the like so that the transmission resource of the SL group discovery signal does not overlap with the transmission resource of Data. Adjust and send Data. The user apparatus UE that receives the control information indicated by A receives the information indicating that the resource indicated by B is assigned to Data, but recognizes the resource to which the SL group discovery signal can be transmitted by (preliminary) setting. Therefore, the SL group discovery signal can be received together with the data.

<Example Common to Embodiments 1-1, 1-2, and 1-3>
Note that, as described above, in the scheme in which each user apparatus UE transmits UE capabilities common to multiple UEs in a common manner (eg, transmission of SLSS in subframes corresponding to UE capabilities) is UE It is applicable not only in the notification of capability.

Also, monitoring resources of SLSS and / or PSBCH and / or SL group discovery signal on the receiving side may be (pre-set) in the user apparatus UE for each UE capability. Thereby, for example, the user apparatus UE can not monitor the resource notified of UE capability higher than the highest UE capability supported by itself.

In addition, when the measurement result of the notification signal (for example, the measurement result of the reception power of the signal) in the user apparatus UE that receives the notification signal of UE capability is lower than the (previously) set threshold, the user apparatus UE It may be determined that there is no user apparatus UE having UE capability notified by the notification signal in the vicinity.

Also, when the user apparatus UE does not receive a notification signal corresponding to a certain UE capability, the user apparatus UE determines that there is no user apparatus UE having UE capability associated with the notification signal in the periphery. May be

<Common to Examples 1-1, 1-2, and 1-3: propagation of UE capability>
As shown in FIG. 17 and FIG. 18 etc., UE capacity is mapped to a time resource (here, a subframe) of a notification signal of UE capability (eg, SLSS, PSBCH, SL group discovery signal, DM-RS). In the case where the user equipment UE notifies UE capability in a certain subframe can not receive the notification of UE capability from the other user equipment UE transmitted in the subframe due to the limitation of Half Duplex.

Therefore, in the case where UE capability is mapped to a time resource (here, a subframe) of a notification signal of UE capability (eg, SLSS, PSBCH, SL group discovery signal, DM-RS), the user apparatus UE can The lower UE capability is selected from the highest supported UE capability supported by itself and one or more UE capabilities received from other user apparatuses UE, and notified of it. When there are multiple types of “low UE capability”, for example, the user apparatus UE may notify the lowest UE capability among the plurality of UE capabilities.

An example will be described with reference to FIGS. 23 and 24. In FIG. 23 and FIG. 24, there are X, Y, and Z as UE capabilities, and among X, Y, and Z, Z is the highest UE capability, then Y is the highest, and X is the lowest UE capability. I assume.

In the example illustrated in FIG. 23, the UE capability of the focused user apparatus UE (for convenience, referred to as the user apparatus UE1) is Y. The said user apparatus UE1 detects UE capability = X and UE capability = Y by receiving the notification signal transmitted from the other user apparatus UE of the periphery. Next, the user apparatus UE1 selects the lower UE capability = X among the detected UE capability = X and the UE capability = Y (or its own UE capability = Y), and notifies that UE capability = X. Do. In the example of FIG. 23, it is conceivable that the user apparatus UE1 can not detect UE capability = Y of another user apparatus UE due to Half Duplex restriction, but even in that case, the user apparatus UE1 detects UE capability = X. Since it can, it can notify UE capability = X.

Thereby, for example, when the user apparatus UE2 having UE capability = Y other than the user apparatus UE1 exists in the vicinity of the user apparatus UE1, the user apparatus UE2 notifies UE capability = X that can communicate with itself. It can detect that the user apparatus UE1 exists.

Also in the example illustrated in FIG. 24, the UE capability of the user apparatus UE1 is Y. The user apparatus UE1 detects UE capability = Z by receiving the notification signal transmitted from other surrounding user apparatuses UE. Next, the user apparatus UE1 selects the lower UE capability = Y among the detected UE capability = Z and its own UE capability = Y, and notifies the UE capability = Y.

Thereby, for example, a user apparatus UE having UE capability = Z can detect that there is a user apparatus UE1 notifying UE capability = Y that can communicate with itself.

In addition, the user apparatus UE which selected a certain UE capability for notification by the process mentioned above may monitor the said UE capability while notifying the said UE capability, as shown to FIG. 23, FIG. Also, the sidelink signal may be transmitted or received in a manner corresponding to the UE capability.

Also, for example, although it is in the state of FIG. 23 at a certain point in time, it is conceivable that the state of FIG. In order to cope with such a situation, a user apparatus UE that has selected a certain UE capability selects when a predetermined time (for example, a (previously) set time) has elapsed from the time of selecting that UE capability. It may be cleared to notify of the original UE capability, monitor surrounding UE capabilities, and select newly notified UE capabilities.

Also, in order to prevent a loop, the process of selection and transmission of UE capabilities for notification may be performed only for UE capabilities in subframes to which a specific SLSS ID is notified.

(Example 2)
Next, a second embodiment which is a UE individual scheme will be described. In Example 2, each user apparatus UE transmits UE capability to notify, for example, on UE-specific resources. In the second embodiment which is a UE specific scheme, the user equipment UE on the receiving side of the UE capability can identify the user equipment UE of the transmission source of the UE capability. Therefore, for example, the user equipment UE on the receiving side of the UE capability can transmit the sidelink signal to the user equipment UE of the transmission source of the UE capability in a scheme according to the capability of the user equipment UE. Specifically, there are the following example 2-1, example 2-2 and example 2-3. Each of these will be described below.

Example 2-1
In Example 2-1, the user apparatus UE transmits UE capability on PSDCH.

For example, the user apparatus UE can notify UE capability using a specific bit in the Discovery Message Format. Also, the transmission resource pool of PSDCH and / or the resource hopping parameters are (pre-set) set for the user apparatus UE for each UE capability, and the user apparatus UE transmits the transmission resource pool and / or resource hopping parameters corresponding to the UE capability to notify. The UE capability may be notified using

Example 2-2
In Example 2-2, the user apparatus UE transmits UE capability on PSSCH or PSCCH.

For example, the user apparatus UE can notify UE capability using a specific bit in SCI transmitted on PSCCH. Moreover, the user apparatus UE may notify UE capability using MAC CE transmitted on PSSCH.

Example 2-3
Example 2-3 is a network assistance method. Specifically, the user apparatus UE reports UE capability to the base station 10. The base station 10 determines, based on the UE capability, restriction information (eg, transmission parameters permitted to be used) indicating the functions etc. which can be used by each user apparatus UE of the serving cell, and carries out the restriction information in the upper layer signaling. To notify each user apparatus UE. The upper layer signaling may be broadcast signaling (eg, system information (SIB)) or may be UE-specific RRC signaling.

When the base station 10 detects that a low capacity user apparatus UE is present in a serving cell, for example, based on UE capabilities received from one or more user apparatuses UE, a restriction corresponding to the low capacity is detected. Determine and inform information.

Here, the term "low capability" as used herein refers to a capability with lower performance and the like among capabilities belonging to a certain functional group, and also includes not supporting the functional group. For example, when "functional group" is "transmission diversity scheme A, transmission diversity scheme B" and transmission diversity scheme B has lower performance than transmission diversity scheme A, "transmission diversity scheme B" has lower capability. Equivalent to In addition, not supporting "transmission diversity" corresponds to "low ability".

Also, determining and notifying the restriction information corresponding to the low capability enumerates the functions supported by the user apparatus UE and determines and notifies the common capability (equivalent to restriction information) of the capabilities among the user apparatuses UE. Also includes.

The user apparatus UE that has received the above restriction information in the serving cell applies the restriction information (e.g., transmission parameter) to transmit the side link signal. The restriction information notified from the base station 10 may include any one or more of or all of a service ID, a priority (Priority level), a resource pool, and an SL carrier.

For example, when the user apparatus UE receives a certain service ID and transmission parameter, it uses the transmission parameter corresponding to the capability equal to or less than the capability of the transmission parameter for transmission of the service ID in the service. Also, for example, when the user apparatus UE receives a certain priority and transmission parameter, if the priority is higher than the priority of another transmission parameter, the notified transmission parameter is used as restriction information. Also, for example, when the user apparatus UE receives a resource pool, the user apparatus UE transmits a side link signal using the resource pool. Also, for example, when the user apparatus UE receives information indicating an SL carrier, the side link signal is transmitted using the SL carrier.

When transmitting a PSBCH, the user apparatus UE that has received the parameter from the base station 10 may transmit the parameter itself by the PSBCH, or the information determined based on the parameter (eg, the transmission function is limited) (Information indicating that) may be transmitted on PSBCH.

Also, the restriction information transmitted from the base station 10 in the system information may be used for sidelink signal transmission for the user apparatus UE in the IDLE state. The restriction information is, for example, allowed transmission parameters and / or UE capabilities and / or release numbers. The UE capability notified as the restriction information is, for example, information indicating that only the function up to the UE capability can be used. The release number notified as the restriction information is, for example, information indicating that only the function up to the release number can be used.

As a more detailed example, if the highest UE capability supported by the user apparatus UE is lower than a predetermined UE capability, the user apparatus UE in the IDLE state may receive, for example, an instruction from the base station 10 (eg, system information State, and transitions to the CONNECTED state, and reports its own UE capability to the base station 10. Thereby, the base station 10 can transmit restriction information to other user apparatuses UE.

Also, by backhaul signaling between base stations, each base station may exchange UE capabilities reported in the serving cell with other base stations. By this means, the base station 10 can also determine and signal restriction information for the user apparatus UE of the serving cell, also taking into consideration the capabilities of the user apparatus UE of the neighboring cell. As an example, the base station 10 can notify the user apparatus UE of the serving cell located near the neighboring cell where the low capacity user apparatus UE is located, of the restriction information.

An example of the operation of the embodiment 2-3 will be described with reference to FIG. This example shows an example in which the user apparatuses UE1 to UE3 are located in the serving cell of the base station 10. In the example of FIG. 25, first, in S201, the user apparatus UE3 reports UE capability to the base station 10. The base station 10 determines restriction information (here, a parameter), and transmits the determined parameter to each user apparatus UE (S202). Also, the user apparatus UE1 located at the cell edge transmits SLSS / PSBCH including information based on the received parameter.

(Common to the first and second embodiments: the method of determining the UE capability notified by the user apparatus UE)
Basically, the user apparatus UE notifies the highest UE capability that the user apparatus UE itself supports. Also, UE capabilities for notification may be (pre-set) configured for the user apparatus UE.

Also, (pre-setting) configuration of UE capability for notification may be, for example, to limit notification-capable UE capability. For example, with respect to a user apparatus UE supporting a certain UE capability, the UE capability equal to or lower than the supporting UE capability is set (pre-set) as the maximum UE capability permitted for notification. It is also good.

For example, when regional regulation can only transmit in a mode corresponding to low UE capability, the above method can be used to notify UE capability in accordance with the regulation. If there is no restriction, the user apparatus UE can notify of the maximum supported UE capability.

In addition, when the user equipment UE on the receiving side of the UE capability detects a UE capability (referred to as UE capability # 2) lower than the highest UE capability (referred to as UE capability # 1) supported by itself, this detection The user apparatus UE that has performed the operation may perform any one of the following options 1 to 3.

Option 1
In option 1, the user equipment UE of the corresponding UE capability # 1 is a transmission parameter that becomes a transmission of a sidelink signal that can not be received by the user equipment UE of UE capability # 2 (eg, a parameter corresponding to UE capability # 1) Do not choose In this case, for example, the user equipment UE of the UE capability # 1 transmits a sidelink signal to the user equipment UE of UE capability # 2 or to a group including the user equipment UE of UE capability # 2 It is also possible not to

Option 1 is applicable to any of the group common scheme (first embodiment) and the UE specific scheme (second embodiment). Particularly in the group common scheme (Example 1), for example, in the case of performing multicast transmission or group cast transmission, the user apparatus UE has more than one UE capability supported by itself among the plurality of detected UE capabilities. When a low UE capability is detected, the user equipment UE of the low UE capability does not select a transmission parameter serving as a transmission of a sidelink signal that can not be received.

<Option 2>
In option 2, the user equipment UE of UE capability # 1 selects, for example, a transmission parameter that results in transmission of a D2D signal that can be received by the user equipment UE of UE capability # 2. Option 2 is applicable to any of the group common scheme (first embodiment) and the UE individual scheme (second embodiment). In addition, in option 2, when a user equipment UE of UE capability # 1 or higher is detected in addition to UE capability # 2 in the group common scheme, transmission is performed using the parameters of UE capability # 1 You may do it.

Option 3
Option 3 is directed to the UE specific method (Example 2). In Option 3, the user equipment UE of UE capability # 1 selects, for the user equipment UE of UE capability # 2, a transmission parameter that is a transmission of a sidelink signal that can be received by the user equipment UE of UE capability # 2.

As an example, in the user equipment UE of UE capability # 1, the detected UE capability # 2 and the information (example: transmission source ID) of the transmission source UE of the UE capability # 2 are higher than the upper layer (example: than the physical layer) The entity of the upper layer is notified, the entity of the upper layer notifies the entity of the lower layer (for example, the physical layer) of the allowable transmission parameter, and the lower layer detects it using the parameter. The sidelink signal is transmitted to the user apparatus UE of the transmission source of UE capability # 2 (or, the sidelink signal is transmitted on the logical channel corresponding to the user apparatus UE of the transmission source).

(Example common to the first and second embodiments: priority etc.)
Priority order may be (pre-) configured for UE capability. As an example, when UE capability set is shown as an example, priority order (Priority order) is set (in advance) as "set # 1> set # 2> set # 3" in descending order of priority. For example, the user apparatus UE can select and notify the UE capability with the highest priority when selecting a UE capability set to notify.

If the user apparatus UE receives a UE capability that it does not know, the user apparatus UE may determine that the UE capability is higher than the highest UE capability supported by the user apparatus UE. Good. The user apparatus UE can not perform reception / transmission corresponding to the high UE capability.

(Device configuration)
Next, a functional configuration example of the user apparatus UE and the base station 10 that execute the processing operations described above will be described. The user apparatus UE and the base station 10 may have all the functions of the first embodiment and the second embodiment, or may have the functions of only one embodiment.

<User device>
FIG. 26 is a diagram illustrating an example of a functional configuration of the user apparatus UE. As shown in FIG. 26, the user apparatus UE includes a signal transmission unit 101, a signal reception unit 102, a setting information management unit 103, and a UE capability notification control unit 104. The functional configuration shown in FIG. 26 is merely an example. As long as the operation according to the present embodiment can be performed, the function classification and the name of the functional unit may be arbitrary.

The signal transmission unit 101 creates a transmission from transmission data, and wirelessly transmits the transmission signal. The signal reception unit 102 wirelessly receives various signals, and acquires higher layer signals from the received physical layer signals. The setting information management unit 103 stores various setting information received from the base station 10 by the signal receiving unit 102 and setting information set in advance. An example of setting information is mapping information.

The UE capability notification control unit 104 executes the processing related to the selection / transmission of the UE capability and the reception / detection described above through the signal transmission unit 101 and the signal reception unit 102. In addition, the function related to the selection and transmission of UE capabilities in the UE capability notification control unit 104 is included in the signal transmission unit 101, and the function related to reception and detection of the UE capabilities in the UE capability notification control unit 104 is included in the signal reception unit 102. It may be

Also, for example, the setting information management unit 103 is configured to hold mapping information indicating mapping of capability information and resources in the side link, and the signal transmission unit 101 is configured to perform the above-mentioned in the side link based on the mapping information. The notification of capability information of the user device is performed by transmitting a notification signal using a resource corresponding to the capability information of the user device.

Also, for example, the signal receiving unit 102 is configured to detect capability information of another user apparatus based on a notification signal to be received, and the signal transmitting unit 101 is configured to detect the capability detected by the signal receiving unit 102. A notification of capability information indicating low capability among information and maximum capability information supported by the user device is performed.

Also, for example, the setting information management unit 103 is configured to hold mapping information indicating mapping of capability information and resources in the side link, and the signal reception unit 102 receives a notification signal from another user apparatus. The signal receiving unit 102 may detect capability information of the other user apparatus based on the mapping information and a resource for receiving the notification signal. Also, the signal transmission unit 101 transmits, for example, a side link signal so that another user apparatus having the capability information of the capability information detected by the signal reception unit can receive.

The notification signal is, for example, a synchronization signal, a signal transmitted on a broadcast channel, a reference signal, or a side link group discovery signal.

In addition, the signal transmission unit 101 is configured to transmit the capability information to the base station 10, and the signal reception unit 102 is a restriction indicating the restriction of the capability used for transmitting the side link signal from the base station 10. It may be configured to receive the information.

<Base station 10>
FIG. 27 is a diagram showing an example of a functional configuration of the base station 10. As shown in FIG. As shown in FIG. 27, the base station 10 includes a signal transmission unit 201, a signal reception unit 202, a setting information management unit 203, a restriction information determination unit 204, and an inter-base station communication unit 205. The functional configuration shown in FIG. 27 is merely an example. As long as the operation according to the present embodiment can be performed, the function classification and the name of the functional unit may be arbitrary.

The signal transmission unit 201 includes a function of generating a signal to be transmitted to the user apparatus UE side and wirelessly transmitting the signal. The signal receiving unit 202 includes a function of receiving various signals transmitted from the user apparatus UE and acquiring, for example, higher layer information from the received signals.

The setting information management unit 203 stores various setting information to be transmitted to the user apparatus UE, various setting information received from the user apparatus UE, and setting information set in advance. The restriction information determination unit 204 determines the restriction information described in the embodiment 2-3. The inter-base station communication unit 205 performs backhaul signaling.

<Hardware configuration>
The block diagrams (FIGS. 26 to 27) used in the description of the above embodiment show blocks of functional units. These functional blocks (components) are realized by any combination of hardware and / or software. Moreover, the implementation means of each functional block is not particularly limited. That is, each functional block may be realized by one device physically and / or logically connected to a plurality of elements, or directly and two or more physically and / or logically separated devices. And / or indirectly (for example, wired and / or wirelessly) connected, and may be realized by the plurality of devices.

Also, for example, both the user apparatus UE and the base station 10 in an embodiment of the present invention may function as a computer that performs the process according to the present embodiment. FIG. 28 is a diagram showing an example of the hardware configuration of the user apparatus UE and the base station 10 according to the present embodiment. Even if the above-mentioned user apparatus UE and base station 10 are physically configured as a computer apparatus including processor 1001, memory 1002, storage 1003, communication apparatus 1004, input apparatus 1005, output apparatus 1006, bus 1007, etc. Good.

In the following description, the term "device" can be read as a circuit, a device, a unit, or the like. The hardware configurations of the user apparatus UE and the base station 10 may be configured to include one or more devices indicated by 1001 to 1006 shown in the figure, or may be configured without including some devices. May be

Each function in the user apparatus UE and the base station 10 causes the processor 1001 to perform an operation by reading predetermined software (program) on hardware such as the processor 1001, the memory 1002, and the like, and communication by the communication apparatus 1004; And by controlling the reading and / or writing of data in the storage 1003.

The processor 1001 operates, for example, an operating system to control the entire computer. The processor 1001 may be configured by a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like.

Also, the processor 1001 reads a program (program code), a software module or data from the storage 1003 and / or the communication device 1004 to the memory 1002, and executes various processing according to these. As a program, a program that causes a computer to execute at least a part of the operations described in the above embodiments is used. For example, the signal transmission unit 101, the signal reception unit 102, the setting information management unit 103, and the UE capability notification control unit 104 of the user apparatus UE illustrated in FIG. 26 are realized by a control program stored in the memory 1002 and operated by the processor 1001. It may be done. Further, for example, the signal transmission unit 201, the signal reception unit 202, the setting information management unit 203, the restriction information determination unit 204, and the inter-base station communication unit 205 of the base station 10 shown in FIG. It may be stored and realized by a control program operating on the processor 1001. The various processes described above have been described to be executed by one processor 1001, but may be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The program may be transmitted from the network via a telecommunication line.

The memory 1002 is a computer readable recording medium, and includes, for example, at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). It may be done. The memory 1002 may be called a register, a cache, a main memory (main storage device) or the like. The memory 1002 can store a program (program code), a software module, and the like that can be executed to execute the process according to the embodiment of the present invention.

The storage 1003 is a computer readable recording medium, and for example, an optical disc such as a CD-ROM (Compact Disc ROM), a hard disc drive, a flexible disc, a magneto-optical disc (eg, a compact disc, a digital versatile disc, a Blu-ray A (registered trademark) disk, a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, and the like may be used. The storage 1003 may be called an auxiliary storage device. The above-mentioned storage medium may be, for example, a database including the memory 1002 and / or the storage 1003, a server or any other suitable medium.

The communication device 1004 is hardware (transmission / reception device) for performing communication between computers via a wired and / or wireless network, and is also called, for example, a network device, a network controller, a network card, a communication module, or the like. For example, the signal transmission unit 101 and the signal reception unit 102 of the user device 10 may be realized by the communication device 1004. Also, the signal transmission unit 201 and the signal reception unit 202 of the base station 10 may be realized by the communication device 1004.

The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, and the like) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. The input device 1005 and the output device 1006 may be integrated (for example, a touch panel).

Also, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured by a single bus or may be configured by different buses among the devices.

Also, each of the user apparatus UE and the base station 10 includes a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc. It may be configured to include hardware, and part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented in at least one of these hardware.

(Summary of the embodiment)
As described above, according to the present embodiment, according to the present embodiment, there is provided a setting information management unit that holds mapping information indicating mapping of capability information and resources in a side link, in a user apparatus in a wireless communication system. And transmitting a notification signal using a resource corresponding to the capability information of the user apparatus in the side link based on the information, and providing a signal transmission unit for notifying the capability information of the user apparatus. User equipment is provided.

The above configuration enables a user apparatus supporting sidelink communication to transmit sidelink capability information to another user apparatus or to receive sidelink capability information from another user apparatus. Technology is provided.

The user device further includes a signal receiving unit that detects capability information of another user device based on the notification signal to be received, and the signal transmitting unit further includes the capability information detected by the signal receiving unit, and the user. Among the maximum capability information supported by the device, notification of capability information indicating low capability may be performed. According to this configuration, even when there is a limitation of Harf Duplex, the user device can detect that there is a user device capable of sidelink communication with itself in the surroundings.

Further, according to the present embodiment, the user equipment in the wireless communication system receives the notification signal from the other user equipment and the setting information management unit that holds the mapping information indicating the mapping of the capability information and the resource in the side link. A user equipment characterized by comprising: a signal reception unit for detecting the capability information of the other user equipment based on the mapping information and a resource for receiving the notification signal; Provided.

The above configuration enables a user apparatus supporting sidelink communication to transmit sidelink capability information to another user apparatus or to receive sidelink capability information from another user apparatus. Technology is provided.

The user apparatus further includes a signal transmission unit that transmits a side link signal, and the signal transmission unit is configured to be able to receive another user apparatus having the capability information of the capability information detected by the signal reception unit. May be sent. Thereby, for example, it is possible to transmit the sidelink signal in accordance with the capabilities of the nearby user devices.

The notification signal is, for example, a synchronization signal, a signal transmitted on a broadcast channel, a reference signal, or a side link group discovery signal. With this configuration, various signals can be used as notification signals.

Further, according to the present embodiment, in the capability information notification method executed by a user apparatus in a wireless communication system, the user apparatus holds configuration information management that indicates mapping of capability information and resources in a side link. And transmitting a notification signal using a resource corresponding to the capability information of the user apparatus in the side link based on the mapping information, thereby performing notification of the capability information of the user apparatus A capability information notification method comprising the steps is provided.

The above configuration enables a user apparatus supporting sidelink communication to transmit sidelink capability information to another user apparatus or to receive sidelink capability information from another user apparatus. Technology is provided.

(Supplement of the embodiment)
Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art should understand various modifications, modifications, alternatives, replacements, and the like. I will. Although specific numerical examples are used to facilitate understanding of the invention, unless otherwise noted, those numerical values are merely examples and any appropriate values may be used. The division of items in the above description is not essential to the present invention, and the items described in two or more items may be used in combination as necessary, and the items described in one item may be used in another item. It may be applied to the matters described in (unless contradictory). The boundaries of the functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of physical parts. The operations of multiple functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by multiple components. With regard to the processing procedures described in the embodiment, the order of processing may be changed as long as there is no contradiction. Although the user apparatus UE and the base station 10 have been described using functional block diagrams for the convenience of the processing description, such an apparatus may be realized in hardware, software or a combination thereof. The software operated by the processor of the user apparatus UE according to the embodiment of the present invention and the software operated by the processor of the base station 10 according to the embodiment of the present invention are random access memory (RAM), flash memory, read only It may be stored in memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.

In addition, notification of information is not limited to the aspect / embodiment described herein, and may be performed by other methods. For example, notification of information may be physical layer signaling (for example, Downlink Control Information (DCI), Uplink Control Information (UCI)), upper layer signaling (for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, It may be implemented by broadcast information (MIB (Master Information Block), SIB (System Information Block), other signals, or a combination thereof. Also, RRC signaling may be called an RRC message, for example, RRC Connection setup (RRC Con ection Setup) message, RRC connection reconfiguration (it may be a RRC Connection Reconfiguration) message.

Each aspect / embodiment described in the present specification is LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access), W-CDMA (Registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, UWB (Ultra-Wide Band), The present invention may be applied to a system utilizing Bluetooth (registered trademark), other appropriate systems, and / or an advanced next-generation system based on these.

As long as there is no contradiction, the processing procedure, sequence, flow chart, etc. of each aspect / embodiment described in this specification may be reversed. For example, for the methods described herein, elements of the various steps are presented in an exemplary order and are not limited to the particular order presented.

The specific operation supposed to be performed by the base station 10 in this specification may be performed by the upper node in some cases. In a network of one or more network nodes with a base station 10, the various operations performed for communication with the user equipment UE may be performed by the base station 10 and / or other than the base station 10. It is clear that it may be done by a network node (for example but not limited to MME or S-GW etc). Although the case where one network node other than the base station 10 has been described above is illustrated, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).

Each aspect / embodiment described in this specification may be used alone, may be used in combination, and may be switched and used along with execution.

The user equipment UE may be a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote communication device, a mobile subscriber station, an access terminal, a mobile terminal, by a person skilled in the art. It may also be called a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term.

Base station 10 may also be referred to by those skilled in the art with NB (Node B), eNB (enhanced Node B), Base Station, gNB, or some other suitable terminology.

The terms "determining", "determining" as used herein may encompass a wide variety of operations. "Judgment", "decision" are, for example, judging, calculating, calculating, processing, processing, deriving, investigating, looking up (for example, a table) (Searching in a database or another data structure), ascertaining may be regarded as “decision”, “decision”, etc. Also, "determination" and "determination" are receiving (e.g. receiving information), transmitting (e.g. transmitting information), input (input), output (output), access (Accessing) (for example, accessing data in a memory) may be regarded as “judged” or “decided”. Also, "judgement" and "decision" are to be considered as "judgement" and "decision" that they have resolved (resolving), selecting (selecting), choosing (choosing), establishing (establishing), etc. May be included. That is, "judgment" "decision" may include considering that some action is "judged" "decision".

As used herein, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

As long as "includes", "including", and variations thereof are used in the present specification or claims, these terms as well as the term "comprising" Is intended to be comprehensive. Further, it is intended that the term "or" as used in the present specification or in the claims is not an exclusive OR.

Throughout the present disclosure, when articles are added by translation, such as, for example, a, an, and the in English, these articles are not clearly indicated by the context: May contain multiple things.

Although the present invention has been described above in detail, it is apparent to those skilled in the art that the present invention is not limited to the embodiments described herein. The present invention can be embodied as modifications and alterations without departing from the spirit and scope of the present invention defined by the description of the claims. Accordingly, the description in the present specification is for the purpose of illustration and does not have any limiting meaning on the present invention.

UE user apparatus 101 Signal transmission unit 102 Signal reception unit 103 Configuration information management unit 104 UE capability notification control unit 10 Base station 201 Signal transmission unit 202 Signal reception unit 203 Configuration information management unit 204 Restriction information decision unit 205 Inter-base station communication unit 1001 Processor 1002 Memory 1003 Storage 1004 Communication Device 1005 Input Device 1006 Output Device

Claims (6)

A user equipment in a wireless communication system,
A setting information management unit that holds mapping information indicating mapping of capability information and resources in the side link;
Providing a signal transmission unit for notifying of the capability information of the user apparatus by transmitting a notification signal using a resource corresponding to the capability information of the user apparatus in the side link based on the mapping information. User equipment characterized by The user apparatus further includes a signal receiving unit that detects capability information of another user apparatus based on the received notification signal.
The signal transmission unit performs notification of capability information indicating low capability among capability information detected by the signal reception unit and maximum capability information supported by the user apparatus. User equipment as described. A user equipment in a wireless communication system,
A setting information management unit that holds mapping information indicating mapping of capability information and resources in the side link;
A signal receiving unit that receives a notification signal from another user device;
The user apparatus characterized in that the signal reception unit detects capability information of the other user apparatus based on the mapping information and a resource for receiving the notification signal. The user apparatus further includes a signal transmission unit that transmits a side link signal,
The user apparatus according to claim 3, wherein the signal transmission unit transmits a side link signal so that another user apparatus having the capability information of the capability information detected by the signal reception unit can receive. The user equipment according to any one of claims 1 to 4, wherein the notification signal is a synchronization signal, a signal transmitted on a broadcast channel, a reference signal, or a side link group discovery signal. A method of notifying capability information performed by a user apparatus in a wireless communication system, comprising:
The user apparatus includes a setting information management unit that holds mapping information indicating mapping of capability information and resources in a side link,
And transmitting a notification signal using a resource corresponding to the capability information of the user apparatus in the side link based on the mapping information, thereby providing a signal transmission step of notifying the capability information of the user apparatus. Ability information notification method.

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